• Place a small rocks glass in the freezer for 10 minutes.
• Add the bourbon, triple sec, lemon juice, simple syrup and bitters to a cocktail shaker and shake to combine.
• Fine strain the mixture into the chilled rocks glass.
• From the orange, peel off a 1½-by-1-inch piece of the peel, being careful to include as little of the white pith as possible. Take a match and, without actually touching the flame to the peel, heat the peel for 3 seconds. Above the glass, squeeze the peel into the flame and away from your face, letting the oils ignite and drop into the glass. Garnish with the flamed orange peel.